Chapter 9.2 Acceleration

Question 1

What is the unit of acceleration?

Answer 1

The unit of acceleration is m/s/s (meters per second squared).

Question 2

What formula is used to calculate velocity/time/acceleration?

Answer 2

The formula is: a = (v-u)/t
Where:
a = acceleration
v = final velocity
u = initial velocity
t = time

Question 3

What is terminal velocity?

Answer 3

Terminal velocity is the constant speed that a free falling object eventually reaches when the resistance of the medium (i.e. air resistance) through which it is falling prevents further acceleration.

Question 3

How do you use the formula a = (v-u)/t?

Answer 3

To use the formula:
Plug in the known values for final velocity (v), initial velocity (u), and time (t)
Solve for the unknown value, which could be acceleration (a), final velocity (v), initial

Question 4

What is acceleration?

Answer 4

Acceleration is the rate at which an object changes its velocity (speed and direction).

Question 5

What is the formula for average acceleration?

Answer 5

The formula for average acceleration is:
average acceleration = (changed in speed) / (time)
OR
a = (v-u)/t
Where:
a = average acceleration
v = final speed
u = initial speed
t = time taken

Question 6

How can you calculate the final speed using the average acceleration formula?

Answer 6

The final speed can be calculated using the formula:
final speed = initial speed + (average acceleration x time taken)
OR
v = u + at
Where:
v = final speed
u = initial speed
a = average acceleration
t = time taken

Question 7

What is a speed-time graph?

Answer 7

A speed-time graph is a type of graph that compares how speed changes over a period of time.

Question 8

What are the different motion patterns shown in the speed-time graph?

Answer 8

The speed-time graph shows the following motion patterns:

Constant velocity
Uniform acceleration
Constant velocity